3 * Private header for Direct Rendering Manager
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
11 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
12 * Copyright (c) 2009-2010, Code Aurora Forum.
13 * All rights reserved.
15 * Permission is hereby granted, free of charge, to any person obtaining a
16 * copy of this software and associated documentation files (the "Software"),
17 * to deal in the Software without restriction, including without limitation
18 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
19 * and/or sell copies of the Software, and to permit persons to whom the
20 * Software is furnished to do so, subject to the following conditions:
22 * The above copyright notice and this permission notice (including the next
23 * paragraph) shall be included in all copies or substantial portions of the
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
29 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
30 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
31 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
32 * OTHER DEALINGS IN THE SOFTWARE.
40 /* add include of current.h so that "current" is defined
41 * before static inline funcs in wait.h. Doing this so we
42 * can build the DRM (part of PI DRI). 4/21/2000 S + B */
43 #include <asm/current.h>
44 #endif /* __alpha__ */
45 #include <linux/kernel.h>
46 #include <linux/miscdevice.h>
48 #include <linux/proc_fs.h>
49 #include <linux/init.h>
50 #include <linux/file.h>
51 #include <linux/platform_device.h>
52 #include <linux/pci.h>
53 #include <linux/jiffies.h>
54 #include <linux/dma-mapping.h>
56 #include <linux/cdev.h>
57 #include <linux/mutex.h>
58 #include <linux/slab.h>
59 #if defined(__alpha__) || defined(__powerpc__)
60 #include <asm/pgtable.h> /* For pte_wrprotect */
64 #include <asm/uaccess.h>
68 #if defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)
69 #include <linux/types.h>
70 #include <linux/agp_backend.h>
72 #include <linux/workqueue.h>
73 #include <linux/poll.h>
74 #include <asm/pgalloc.h>
76 #include <drm/drm_sarea.h>
78 #include <linux/idr.h>
80 #define __OS_HAS_AGP (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
81 #define __OS_HAS_MTRR (defined(CONFIG_MTRR))
88 #include <drm/drm_os_linux.h>
89 #include <drm/drm_hashtab.h>
90 #include <drm/drm_mm.h>
92 #define DRM_UT_CORE 0x01
93 #define DRM_UT_DRIVER 0x02
94 #define DRM_UT_KMS 0x04
95 #define DRM_UT_PRIME 0x08
97 * Three debug levels are defined.
98 * drm_core, drm_driver, drm_kms
99 * drm_core level can be used in the generic drm code. For example:
100 * drm_ioctl, drm_mm, drm_memory
101 * The macro definition of DRM_DEBUG is used.
102 * DRM_DEBUG(fmt, args...)
103 * The debug info by using the DRM_DEBUG can be obtained by adding
104 * the boot option of "drm.debug=1".
106 * drm_driver level can be used in the specific drm driver. It is used
107 * to add the debug info related with the drm driver. For example:
108 * i915_drv, i915_dma, i915_gem, radeon_drv,
109 * The macro definition of DRM_DEBUG_DRIVER can be used.
110 * DRM_DEBUG_DRIVER(fmt, args...)
111 * The debug info by using the DRM_DEBUG_DRIVER can be obtained by
112 * adding the boot option of "drm.debug=0x02"
114 * drm_kms level can be used in the KMS code related with specific drm driver.
115 * It is used to add the debug info related with KMS mode. For example:
116 * the connector/crtc ,
117 * The macro definition of DRM_DEBUG_KMS can be used.
118 * DRM_DEBUG_KMS(fmt, args...)
119 * The debug info by using the DRM_DEBUG_KMS can be obtained by
120 * adding the boot option of "drm.debug=0x04"
122 * If we add the boot option of "drm.debug=0x06", we can get the debug info by
123 * using the DRM_DEBUG_KMS and DRM_DEBUG_DRIVER.
124 * If we add the boot option of "drm.debug=0x05", we can get the debug info by
125 * using the DRM_DEBUG_KMS and DRM_DEBUG.
128 extern __printf(4, 5)
129 void drm_ut_debug_printk(unsigned int request_level
,
131 const char *function_name
,
132 const char *format
, ...);
133 extern __printf(2, 3)
134 int drm_err(const char *func
, const char *format
, ...);
136 /***********************************************************************/
137 /** \name DRM template customization defaults */
140 /* driver capabilities and requirements mask */
141 #define DRIVER_USE_AGP 0x1
142 #define DRIVER_REQUIRE_AGP 0x2
143 #define DRIVER_USE_MTRR 0x4
144 #define DRIVER_PCI_DMA 0x8
145 #define DRIVER_SG 0x10
146 #define DRIVER_HAVE_DMA 0x20
147 #define DRIVER_HAVE_IRQ 0x40
148 #define DRIVER_IRQ_SHARED 0x80
149 #define DRIVER_IRQ_VBL 0x100
150 #define DRIVER_DMA_QUEUE 0x200
151 #define DRIVER_FB_DMA 0x400
152 #define DRIVER_IRQ_VBL2 0x800
153 #define DRIVER_GEM 0x1000
154 #define DRIVER_MODESET 0x2000
155 #define DRIVER_PRIME 0x4000
157 #define DRIVER_BUS_PCI 0x1
158 #define DRIVER_BUS_PLATFORM 0x2
159 #define DRIVER_BUS_USB 0x3
161 /***********************************************************************/
162 /** \name Begin the DRM... */
165 #define DRM_DEBUG_CODE 2 /**< Include debugging code if > 1, then
166 also include looping detection. */
168 #define DRM_MAGIC_HASH_ORDER 4 /**< Size of key hash table. Must be power of 2. */
169 #define DRM_KERNEL_CONTEXT 0 /**< Change drm_resctx if changed */
170 #define DRM_RESERVED_CONTEXTS 1 /**< Change drm_resctx if changed */
171 #define DRM_LOOPING_LIMIT 5000000
172 #define DRM_TIME_SLICE (HZ/20) /**< Time slice for GLXContexts */
173 #define DRM_LOCK_SLICE 1 /**< Time slice for lock, in jiffies */
175 #define DRM_FLAG_DEBUG 0x01
177 #define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
178 #define DRM_MAP_HASH_OFFSET 0x10000000
182 /***********************************************************************/
183 /** \name Macros to make printk easier */
189 * \param fmt printf() like format string.
190 * \param arg arguments
192 #define DRM_ERROR(fmt, ...) \
193 drm_err(__func__, fmt, ##__VA_ARGS__)
195 #define DRM_INFO(fmt, ...) \
196 printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
201 * \param fmt printf() like format string.
202 * \param arg arguments
205 #define DRM_DEBUG(fmt, args...) \
207 drm_ut_debug_printk(DRM_UT_CORE, DRM_NAME, \
208 __func__, fmt, ##args); \
211 #define DRM_DEBUG_DRIVER(fmt, args...) \
213 drm_ut_debug_printk(DRM_UT_DRIVER, DRM_NAME, \
214 __func__, fmt, ##args); \
216 #define DRM_DEBUG_KMS(fmt, args...) \
218 drm_ut_debug_printk(DRM_UT_KMS, DRM_NAME, \
219 __func__, fmt, ##args); \
221 #define DRM_DEBUG_PRIME(fmt, args...) \
223 drm_ut_debug_printk(DRM_UT_PRIME, DRM_NAME, \
224 __func__, fmt, ##args); \
226 #define DRM_LOG(fmt, args...) \
228 drm_ut_debug_printk(DRM_UT_CORE, NULL, \
229 NULL, fmt, ##args); \
231 #define DRM_LOG_KMS(fmt, args...) \
233 drm_ut_debug_printk(DRM_UT_KMS, NULL, \
234 NULL, fmt, ##args); \
236 #define DRM_LOG_MODE(fmt, args...) \
238 drm_ut_debug_printk(DRM_UT_MODE, NULL, \
239 NULL, fmt, ##args); \
241 #define DRM_LOG_DRIVER(fmt, args...) \
243 drm_ut_debug_printk(DRM_UT_DRIVER, NULL, \
244 NULL, fmt, ##args); \
247 #define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)
248 #define DRM_DEBUG_KMS(fmt, args...) do { } while (0)
249 #define DRM_DEBUG_PRIME(fmt, args...) do { } while (0)
250 #define DRM_DEBUG(fmt, arg...) do { } while (0)
251 #define DRM_LOG(fmt, arg...) do { } while (0)
252 #define DRM_LOG_KMS(fmt, args...) do { } while (0)
253 #define DRM_LOG_MODE(fmt, arg...) do { } while (0)
254 #define DRM_LOG_DRIVER(fmt, arg...) do { } while (0)
260 /***********************************************************************/
261 /** \name Internal types and structures */
264 #define DRM_ARRAY_SIZE(x) ARRAY_SIZE(x)
266 #define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
267 #define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
269 #define DRM_IF_VERSION(maj, min) (maj << 16 | min)
272 * Test that the hardware lock is held by the caller, returning otherwise.
274 * \param dev DRM device.
275 * \param filp file pointer of the caller.
277 #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
279 if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
280 _file_priv->master->lock.file_priv != _file_priv) { \
281 DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
282 __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
283 _file_priv->master->lock.file_priv, _file_priv); \
289 * Ioctl function type.
291 * \param inode device inode.
292 * \param file_priv DRM file private pointer.
293 * \param cmd command.
294 * \param arg argument.
296 typedef int drm_ioctl_t(struct drm_device
*dev
, void *data
,
297 struct drm_file
*file_priv
);
299 typedef int drm_ioctl_compat_t(struct file
*filp
, unsigned int cmd
,
302 #define DRM_IOCTL_NR(n) _IOC_NR(n)
303 #define DRM_MAJOR 226
306 #define DRM_MASTER 0x2
307 #define DRM_ROOT_ONLY 0x4
308 #define DRM_CONTROL_ALLOW 0x8
309 #define DRM_UNLOCKED 0x10
311 struct drm_ioctl_desc
{
315 unsigned int cmd_drv
;
319 * Creates a driver or general drm_ioctl_desc array entry for the given
320 * ioctl, for use by drm_ioctl().
323 #define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
324 [DRM_IOCTL_NR(DRM_##ioctl)] = {.cmd = DRM_##ioctl, .func = _func, .flags = _flags, .cmd_drv = DRM_IOCTL_##ioctl}
326 struct drm_magic_entry
{
327 struct list_head head
;
328 struct drm_hash_item hash_item
;
329 struct drm_file
*priv
;
332 struct drm_vma_entry
{
333 struct list_head head
;
334 struct vm_area_struct
*vma
;
342 int idx
; /**< Index into master buflist */
343 int total
; /**< Buffer size */
344 int order
; /**< log-base-2(total) */
345 int used
; /**< Amount of buffer in use (for DMA) */
346 unsigned long offset
; /**< Byte offset (used internally) */
347 void *address
; /**< Address of buffer */
348 unsigned long bus_address
; /**< Bus address of buffer */
349 struct drm_buf
*next
; /**< Kernel-only: used for free list */
350 __volatile__
int waiting
; /**< On kernel DMA queue */
351 __volatile__
int pending
; /**< On hardware DMA queue */
352 struct drm_file
*file_priv
; /**< Private of holding file descr */
353 int context
; /**< Kernel queue for this buffer */
354 int while_locked
; /**< Dispatch this buffer while locked */
362 } list
; /**< Which list we're on */
364 int dev_priv_size
; /**< Size of buffer private storage */
365 void *dev_private
; /**< Per-buffer private storage */
368 /** bufs is one longer than it has to be */
369 struct drm_waitlist
{
370 int count
; /**< Number of possible buffers */
371 struct drm_buf
**bufs
; /**< List of pointers to buffers */
372 struct drm_buf
**rp
; /**< Read pointer */
373 struct drm_buf
**wp
; /**< Write pointer */
374 struct drm_buf
**end
; /**< End pointer */
375 spinlock_t read_lock
;
376 spinlock_t write_lock
;
379 struct drm_freelist
{
380 int initialized
; /**< Freelist in use */
381 atomic_t count
; /**< Number of free buffers */
382 struct drm_buf
*next
; /**< End pointer */
384 wait_queue_head_t waiting
; /**< Processes waiting on free bufs */
385 int low_mark
; /**< Low water mark */
386 int high_mark
; /**< High water mark */
387 atomic_t wfh
; /**< If waiting for high mark */
391 typedef struct drm_dma_handle
{
398 * Buffer entry. There is one of this for each buffer size order.
400 struct drm_buf_entry
{
401 int buf_size
; /**< size */
402 int buf_count
; /**< number of buffers */
403 struct drm_buf
*buflist
; /**< buffer list */
406 struct drm_dma_handle
**seglist
;
408 struct drm_freelist freelist
;
411 /* Event queued up for userspace to read */
412 struct drm_pending_event
{
413 struct drm_event
*event
;
414 struct list_head link
;
415 struct drm_file
*file_priv
;
416 pid_t pid
; /* pid of requester, no guarantee it's valid by the time
417 we deliver the event, for tracing only */
418 void (*destroy
)(struct drm_pending_event
*event
);
421 /* initial implementaton using a linked list - todo hashtab */
422 struct drm_prime_file_private
{
423 struct list_head head
;
427 /** File private data */
433 unsigned long ioctl_count
;
434 struct list_head lhead
;
435 struct drm_minor
*minor
;
436 unsigned long lock_count
;
438 /** Mapping of mm object handles to object pointers. */
439 struct idr object_idr
;
440 /** Lock for synchronization of access to object_idr. */
441 spinlock_t table_lock
;
446 int is_master
; /* this file private is a master for a minor */
447 struct drm_master
*master
; /* master this node is currently associated with
448 N.B. not always minor->master */
449 struct list_head fbs
;
451 wait_queue_head_t event_wait
;
452 struct list_head event_list
;
455 struct drm_prime_file_private prime
;
460 atomic_t use_count
; /**< Outstanding uses (+1) */
461 atomic_t finalization
; /**< Finalization in progress */
462 atomic_t block_count
; /**< Count of processes waiting */
463 atomic_t block_read
; /**< Queue blocked for reads */
464 wait_queue_head_t read_queue
; /**< Processes waiting on block_read */
465 atomic_t block_write
; /**< Queue blocked for writes */
466 wait_queue_head_t write_queue
; /**< Processes waiting on block_write */
467 atomic_t total_queued
; /**< Total queued statistic */
468 atomic_t total_flushed
; /**< Total flushes statistic */
469 atomic_t total_locks
; /**< Total locks statistics */
470 enum drm_ctx_flags flags
; /**< Context preserving and 2D-only */
471 struct drm_waitlist waitlist
; /**< Pending buffers */
472 wait_queue_head_t flush_queue
; /**< Processes waiting until flush */
478 struct drm_lock_data
{
479 struct drm_hw_lock
*hw_lock
; /**< Hardware lock */
480 /** Private of lock holder's file (NULL=kernel) */
481 struct drm_file
*file_priv
;
482 wait_queue_head_t lock_queue
; /**< Queue of blocked processes */
483 unsigned long lock_time
; /**< Time of last lock in jiffies */
485 uint32_t kernel_waiters
;
486 uint32_t user_waiters
;
493 struct drm_device_dma
{
495 struct drm_buf_entry bufs
[DRM_MAX_ORDER
+ 1]; /**< buffers, grouped by their size order */
496 int buf_count
; /**< total number of buffers */
497 struct drm_buf
**buflist
; /**< Vector of pointers into drm_device_dma::bufs */
499 int page_count
; /**< number of pages */
500 unsigned long *pagelist
; /**< page list */
501 unsigned long byte_count
;
503 _DRM_DMA_USE_AGP
= 0x01,
504 _DRM_DMA_USE_SG
= 0x02,
505 _DRM_DMA_USE_FB
= 0x04,
506 _DRM_DMA_USE_PCI_RO
= 0x08
512 * AGP memory entry. Stored as a doubly linked list.
515 unsigned long handle
; /**< handle */
517 unsigned long bound
; /**< address */
519 struct list_head head
;
525 * \sa drm_agp_init() and drm_device::agp.
527 struct drm_agp_head
{
528 DRM_AGP_KERN agp_info
; /**< AGP device information */
529 struct list_head memory
;
530 unsigned long mode
; /**< AGP mode */
531 struct agp_bridge_data
*bridge
;
532 int enabled
; /**< whether the AGP bus as been enabled */
533 int acquired
; /**< whether the AGP device has been acquired */
536 int cant_use_aperture
;
537 unsigned long page_mask
;
541 * Scatter-gather memory.
544 unsigned long handle
;
547 struct page
**pagelist
;
553 struct drm_hw_lock
*lock
;
558 * Kernel side of a mapping
560 struct drm_local_map
{
561 resource_size_t offset
; /**< Requested physical address (0 for SAREA)*/
562 unsigned long size
; /**< Requested physical size (bytes) */
563 enum drm_map_type type
; /**< Type of memory to map */
564 enum drm_map_flags flags
; /**< Flags */
565 void *handle
; /**< User-space: "Handle" to pass to mmap() */
566 /**< Kernel-space: kernel-virtual address */
567 int mtrr
; /**< MTRR slot used */
570 typedef struct drm_local_map drm_local_map_t
;
575 struct drm_map_list
{
576 struct list_head head
; /**< list head */
577 struct drm_hash_item hash
;
578 struct drm_local_map
*map
; /**< mapping */
580 struct drm_master
*master
;
581 struct drm_mm_node
*file_offset_node
; /**< fake offset */
585 * Context handle list
587 struct drm_ctx_list
{
588 struct list_head head
; /**< list head */
589 drm_context_t handle
; /**< context handle */
590 struct drm_file
*tag
; /**< associated fd private data */
593 /* location of GART table */
594 #define DRM_ATI_GART_MAIN 1
595 #define DRM_ATI_GART_FB 2
597 #define DRM_ATI_GART_PCI 1
598 #define DRM_ATI_GART_PCIE 2
599 #define DRM_ATI_GART_IGP 3
601 struct drm_ati_pcigart_info
{
602 int gart_table_location
;
606 dma_addr_t table_mask
;
607 struct drm_dma_handle
*table_handle
;
608 struct drm_local_map mapping
;
613 * GEM specific mm private for tracking GEM objects
616 struct drm_mm offset_manager
; /**< Offset mgmt for buffer objects */
617 struct drm_open_hash offset_hash
; /**< User token hash table for maps */
621 * This structure defines the drm_mm memory object, which will be used by the
622 * DRM for its buffer objects.
624 struct drm_gem_object
{
625 /** Reference count of this object */
626 struct kref refcount
;
628 /** Handle count of this object. Each handle also holds a reference */
629 atomic_t handle_count
; /* number of handles on this object */
631 /** Related drm device */
632 struct drm_device
*dev
;
634 /** File representing the shmem storage */
637 /* Mapping info for this object */
638 struct drm_map_list map_list
;
641 * Size of the object, in bytes. Immutable over the object's
647 * Global name for this object, starts at 1. 0 means unnamed.
648 * Access is covered by the object_name_lock in the related drm_device
653 * Memory domains. These monitor which caches contain read/write data
654 * related to the object. When transitioning from one set of domains
655 * to another, the driver is called to ensure that caches are suitably
656 * flushed and invalidated
658 uint32_t read_domains
;
659 uint32_t write_domain
;
662 * While validating an exec operation, the
663 * new read/write domain values are computed here.
664 * They will be transferred to the above values
665 * at the point that any cache flushing occurs
667 uint32_t pending_read_domains
;
668 uint32_t pending_write_domain
;
670 void *driver_private
;
672 /* dma buf exported from this GEM object */
673 struct dma_buf
*export_dma_buf
;
675 /* dma buf attachment backing this object */
676 struct dma_buf_attachment
*import_attach
;
679 #include <drm/drm_crtc.h>
681 /* per-master structure */
684 struct kref refcount
; /* refcount for this master */
686 struct list_head head
; /**< each minor contains a list of masters */
687 struct drm_minor
*minor
; /**< link back to minor we are a master for */
689 char *unique
; /**< Unique identifier: e.g., busid */
690 int unique_len
; /**< Length of unique field */
691 int unique_size
; /**< amount allocated */
693 int blocked
; /**< Blocked due to VC switch? */
695 /** \name Authentication */
697 struct drm_open_hash magiclist
;
698 struct list_head magicfree
;
701 struct drm_lock_data lock
; /**< Information on hardware lock */
703 void *driver_priv
; /**< Private structure for driver to use */
706 /* Size of ringbuffer for vblank timestamps. Just double-buffer
707 * in initial implementation.
709 #define DRM_VBLANKTIME_RBSIZE 2
711 /* Flags and return codes for get_vblank_timestamp() driver function. */
712 #define DRM_CALLED_FROM_VBLIRQ 1
713 #define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
714 #define DRM_VBLANKTIME_INVBL (1 << 1)
716 /* get_scanout_position() return flags */
717 #define DRM_SCANOUTPOS_VALID (1 << 0)
718 #define DRM_SCANOUTPOS_INVBL (1 << 1)
719 #define DRM_SCANOUTPOS_ACCURATE (1 << 2)
723 int (*get_irq
)(struct drm_device
*dev
);
724 const char *(*get_name
)(struct drm_device
*dev
);
725 int (*set_busid
)(struct drm_device
*dev
, struct drm_master
*master
);
726 int (*set_unique
)(struct drm_device
*dev
, struct drm_master
*master
,
727 struct drm_unique
*unique
);
728 int (*irq_by_busid
)(struct drm_device
*dev
, struct drm_irq_busid
*p
);
729 /* hooks that are for PCI */
730 int (*agp_init
)(struct drm_device
*dev
);
735 * DRM driver structure. This structure represent the common code for
736 * a family of cards. There will one drm_device for each card present
740 int (*load
) (struct drm_device
*, unsigned long flags
);
741 int (*firstopen
) (struct drm_device
*);
742 int (*open
) (struct drm_device
*, struct drm_file
*);
743 void (*preclose
) (struct drm_device
*, struct drm_file
*file_priv
);
744 void (*postclose
) (struct drm_device
*, struct drm_file
*);
745 void (*lastclose
) (struct drm_device
*);
746 int (*unload
) (struct drm_device
*);
747 int (*suspend
) (struct drm_device
*, pm_message_t state
);
748 int (*resume
) (struct drm_device
*);
749 int (*dma_ioctl
) (struct drm_device
*dev
, void *data
, struct drm_file
*file_priv
);
750 int (*dma_quiescent
) (struct drm_device
*);
751 int (*context_dtor
) (struct drm_device
*dev
, int context
);
754 * get_vblank_counter - get raw hardware vblank counter
756 * @crtc: counter to fetch
758 * Driver callback for fetching a raw hardware vblank counter for @crtc.
759 * If a device doesn't have a hardware counter, the driver can simply
760 * return the value of drm_vblank_count. The DRM core will account for
761 * missed vblank events while interrupts where disabled based on system
764 * Wraparound handling and loss of events due to modesetting is dealt
765 * with in the DRM core code.
768 * Raw vblank counter value.
770 u32 (*get_vblank_counter
) (struct drm_device
*dev
, int crtc
);
773 * enable_vblank - enable vblank interrupt events
775 * @crtc: which irq to enable
777 * Enable vblank interrupts for @crtc. If the device doesn't have
778 * a hardware vblank counter, this routine should be a no-op, since
779 * interrupts will have to stay on to keep the count accurate.
782 * Zero on success, appropriate errno if the given @crtc's vblank
783 * interrupt cannot be enabled.
785 int (*enable_vblank
) (struct drm_device
*dev
, int crtc
);
788 * disable_vblank - disable vblank interrupt events
790 * @crtc: which irq to enable
792 * Disable vblank interrupts for @crtc. If the device doesn't have
793 * a hardware vblank counter, this routine should be a no-op, since
794 * interrupts will have to stay on to keep the count accurate.
796 void (*disable_vblank
) (struct drm_device
*dev
, int crtc
);
799 * Called by \c drm_device_is_agp. Typically used to determine if a
800 * card is really attached to AGP or not.
802 * \param dev DRM device handle
805 * One of three values is returned depending on whether or not the
806 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
807 * (return of 1), or may or may not be AGP (return of 2).
809 int (*device_is_agp
) (struct drm_device
*dev
);
812 * Called by vblank timestamping code.
814 * Return the current display scanout position from a crtc.
816 * \param dev DRM device.
817 * \param crtc Id of the crtc to query.
818 * \param *vpos Target location for current vertical scanout position.
819 * \param *hpos Target location for current horizontal scanout position.
821 * Returns vpos as a positive number while in active scanout area.
822 * Returns vpos as a negative number inside vblank, counting the number
823 * of scanlines to go until end of vblank, e.g., -1 means "one scanline
824 * until start of active scanout / end of vblank."
826 * \return Flags, or'ed together as follows:
828 * DRM_SCANOUTPOS_VALID = Query successful.
829 * DRM_SCANOUTPOS_INVBL = Inside vblank.
830 * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
831 * this flag means that returned position may be offset by a constant
832 * but unknown small number of scanlines wrt. real scanout position.
835 int (*get_scanout_position
) (struct drm_device
*dev
, int crtc
,
836 int *vpos
, int *hpos
);
839 * Called by \c drm_get_last_vbltimestamp. Should return a precise
840 * timestamp when the most recent VBLANK interval ended or will end.
842 * Specifically, the timestamp in @vblank_time should correspond as
843 * closely as possible to the time when the first video scanline of
844 * the video frame after the end of VBLANK will start scanning out,
845 * the time immediately after end of the VBLANK interval. If the
846 * @crtc is currently inside VBLANK, this will be a time in the future.
847 * If the @crtc is currently scanning out a frame, this will be the
848 * past start time of the current scanout. This is meant to adhere
849 * to the OpenML OML_sync_control extension specification.
851 * \param dev dev DRM device handle.
852 * \param crtc crtc for which timestamp should be returned.
853 * \param *max_error Maximum allowable timestamp error in nanoseconds.
854 * Implementation should strive to provide timestamp
855 * with an error of at most *max_error nanoseconds.
856 * Returns true upper bound on error for timestamp.
857 * \param *vblank_time Target location for returned vblank timestamp.
858 * \param flags 0 = Defaults, no special treatment needed.
859 * \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
860 * irq handler. Some drivers need to apply some workarounds
861 * for gpu-specific vblank irq quirks if flag is set.
864 * Zero if timestamping isn't supported in current display mode or a
865 * negative number on failure. A positive status code on success,
866 * which describes how the vblank_time timestamp was computed.
868 int (*get_vblank_timestamp
) (struct drm_device
*dev
, int crtc
,
870 struct timeval
*vblank_time
,
873 /* these have to be filled in */
875 irqreturn_t(*irq_handler
) (DRM_IRQ_ARGS
);
876 void (*irq_preinstall
) (struct drm_device
*dev
);
877 int (*irq_postinstall
) (struct drm_device
*dev
);
878 void (*irq_uninstall
) (struct drm_device
*dev
);
879 void (*set_version
) (struct drm_device
*dev
,
880 struct drm_set_version
*sv
);
882 /* Master routines */
883 int (*master_create
)(struct drm_device
*dev
, struct drm_master
*master
);
884 void (*master_destroy
)(struct drm_device
*dev
, struct drm_master
*master
);
886 * master_set is called whenever the minor master is set.
887 * master_drop is called whenever the minor master is dropped.
890 int (*master_set
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
892 void (*master_drop
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
895 int (*debugfs_init
)(struct drm_minor
*minor
);
896 void (*debugfs_cleanup
)(struct drm_minor
*minor
);
899 * Driver-specific constructor for drm_gem_objects, to set up
900 * obj->driver_private.
902 * Returns 0 on success.
904 int (*gem_init_object
) (struct drm_gem_object
*obj
);
905 void (*gem_free_object
) (struct drm_gem_object
*obj
);
906 int (*gem_open_object
) (struct drm_gem_object
*, struct drm_file
*);
907 void (*gem_close_object
) (struct drm_gem_object
*, struct drm_file
*);
910 /* export handle -> fd (see drm_gem_prime_handle_to_fd() helper) */
911 int (*prime_handle_to_fd
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
912 uint32_t handle
, uint32_t flags
, int *prime_fd
);
913 /* import fd -> handle (see drm_gem_prime_fd_to_handle() helper) */
914 int (*prime_fd_to_handle
)(struct drm_device
*dev
, struct drm_file
*file_priv
,
915 int prime_fd
, uint32_t *handle
);
916 /* export GEM -> dmabuf */
917 struct dma_buf
* (*gem_prime_export
)(struct drm_device
*dev
,
918 struct drm_gem_object
*obj
, int flags
);
919 /* import dmabuf -> GEM */
920 struct drm_gem_object
* (*gem_prime_import
)(struct drm_device
*dev
,
921 struct dma_buf
*dma_buf
);
923 /* vga arb irq handler */
924 void (*vgaarb_irq
)(struct drm_device
*dev
, bool state
);
926 /* dumb alloc support */
927 int (*dumb_create
)(struct drm_file
*file_priv
,
928 struct drm_device
*dev
,
929 struct drm_mode_create_dumb
*args
);
930 int (*dumb_map_offset
)(struct drm_file
*file_priv
,
931 struct drm_device
*dev
, uint32_t handle
,
933 int (*dumb_destroy
)(struct drm_file
*file_priv
,
934 struct drm_device
*dev
,
937 /* Driver private ops for this object */
938 const struct vm_operations_struct
*gem_vm_ops
;
949 struct drm_ioctl_desc
*ioctls
;
951 const struct file_operations
*fops
;
953 struct pci_driver
*pci
;
954 struct platform_device
*platform_device
;
955 struct usb_driver
*usb
;
959 /* List of devices hanging off this driver */
960 struct list_head device_list
;
963 #define DRM_MINOR_UNASSIGNED 0
964 #define DRM_MINOR_LEGACY 1
965 #define DRM_MINOR_CONTROL 2
966 #define DRM_MINOR_RENDER 3
970 * debugfs node list. This structure represents a debugfs file to
971 * be created by the drm core
973 struct drm_debugfs_list
{
974 const char *name
; /** file name */
975 int (*show
)(struct seq_file
*, void*); /** show callback */
976 u32 driver_features
; /**< Required driver features for this entry */
980 * debugfs node structure. This structure represents a debugfs file.
982 struct drm_debugfs_node
{
983 struct list_head list
;
984 struct drm_minor
*minor
;
985 struct drm_debugfs_list
*debugfs_ent
;
990 * Info file list entry. This structure represents a debugfs or proc file to
991 * be created by the drm core
993 struct drm_info_list
{
994 const char *name
; /** file name */
995 int (*show
)(struct seq_file
*, void*); /** show callback */
996 u32 driver_features
; /**< Required driver features for this entry */
1001 * debugfs node structure. This structure represents a debugfs file.
1003 struct drm_info_node
{
1004 struct list_head list
;
1005 struct drm_minor
*minor
;
1006 struct drm_info_list
*info_ent
;
1007 struct dentry
*dent
;
1011 * DRM minor structure. This structure represents a drm minor number.
1014 int index
; /**< Minor device number */
1015 int type
; /**< Control or render */
1016 dev_t device
; /**< Device number for mknod */
1017 struct device kdev
; /**< Linux device */
1018 struct drm_device
*dev
;
1020 struct proc_dir_entry
*proc_root
; /**< proc directory entry */
1021 struct drm_info_node proc_nodes
;
1022 struct dentry
*debugfs_root
;
1024 struct list_head debugfs_list
;
1025 struct mutex debugfs_lock
; /* Protects debugfs_list. */
1027 struct drm_master
*master
; /* currently active master for this node */
1028 struct list_head master_list
;
1029 struct drm_mode_group mode_group
;
1032 /* mode specified on the command line */
1033 struct drm_cmdline_mode
{
1035 bool refresh_specified
;
1044 enum drm_connector_force force
;
1048 struct drm_pending_vblank_event
{
1049 struct drm_pending_event base
;
1051 struct drm_event_vblank event
;
1055 * DRM device structure. This structure represent a complete card that
1056 * may contain multiple heads.
1059 struct list_head driver_item
; /**< list of devices per driver */
1060 char *devname
; /**< For /proc/interrupts */
1061 int if_version
; /**< Highest interface version set */
1065 spinlock_t count_lock
; /**< For inuse, drm_device::open_count, drm_device::buf_use */
1066 struct mutex struct_mutex
; /**< For others */
1069 /** \name Usage Counters */
1071 int open_count
; /**< Outstanding files open */
1072 atomic_t ioctl_count
; /**< Outstanding IOCTLs pending */
1073 atomic_t vma_count
; /**< Outstanding vma areas open */
1074 int buf_use
; /**< Buffers in use -- cannot alloc */
1075 atomic_t buf_alloc
; /**< Buffer allocation in progress */
1078 /** \name Performance counters */
1080 unsigned long counters
;
1081 enum drm_stat_type types
[15];
1082 atomic_t counts
[15];
1085 struct list_head filelist
;
1087 /** \name Memory management */
1089 struct list_head maplist
; /**< Linked list of regions */
1090 int map_count
; /**< Number of mappable regions */
1091 struct drm_open_hash map_hash
; /**< User token hash table for maps */
1093 /** \name Context handle management */
1095 struct list_head ctxlist
; /**< Linked list of context handles */
1096 int ctx_count
; /**< Number of context handles */
1097 struct mutex ctxlist_mutex
; /**< For ctxlist */
1101 struct list_head vmalist
; /**< List of vmas (for debugging) */
1105 /** \name DMA support */
1107 struct drm_device_dma
*dma
; /**< Optional pointer for DMA support */
1110 /** \name Context support */
1112 int irq_enabled
; /**< True if irq handler is enabled */
1113 __volatile__
long context_flag
; /**< Context swapping flag */
1114 __volatile__
long interrupt_flag
; /**< Interruption handler flag */
1115 __volatile__
long dma_flag
; /**< DMA dispatch flag */
1116 wait_queue_head_t context_wait
; /**< Processes waiting on ctx switch */
1117 int last_checked
; /**< Last context checked for DMA */
1118 int last_context
; /**< Last current context */
1119 unsigned long last_switch
; /**< jiffies at last context switch */
1122 struct work_struct work
;
1123 /** \name VBLANK IRQ support */
1127 * At load time, disabling the vblank interrupt won't be allowed since
1128 * old clients may not call the modeset ioctl and therefore misbehave.
1129 * Once the modeset ioctl *has* been called though, we can safely
1130 * disable them when unused.
1132 int vblank_disable_allowed
;
1134 wait_queue_head_t
*vbl_queue
; /**< VBLANK wait queue */
1135 atomic_t
*_vblank_count
; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */
1136 struct timeval
*_vblank_time
; /**< timestamp of current vblank_count (drivers must alloc right number of fields) */
1137 spinlock_t vblank_time_lock
; /**< Protects vblank count and time updates during vblank enable/disable */
1138 spinlock_t vbl_lock
;
1139 atomic_t
*vblank_refcount
; /* number of users of vblank interruptsper crtc */
1140 u32
*last_vblank
; /* protected by dev->vbl_lock, used */
1141 /* for wraparound handling */
1142 int *vblank_enabled
; /* so we don't call enable more than
1144 int *vblank_inmodeset
; /* Display driver is setting mode */
1145 u32
*last_vblank_wait
; /* Last vblank seqno waited per CRTC */
1146 struct timer_list vblank_disable_timer
;
1148 u32 max_vblank_count
; /**< size of vblank counter register */
1153 struct list_head vblank_event_list
;
1154 spinlock_t event_lock
;
1160 struct fasync_struct
*buf_async
;/**< Processes waiting for SIGIO */
1161 wait_queue_head_t buf_readers
; /**< Processes waiting to read */
1162 wait_queue_head_t buf_writers
; /**< Processes waiting to ctx switch */
1164 struct drm_agp_head
*agp
; /**< AGP data */
1166 struct device
*dev
; /**< Device structure */
1167 struct pci_dev
*pdev
; /**< PCI device structure */
1168 int pci_vendor
; /**< PCI vendor id */
1169 int pci_device
; /**< PCI device id */
1171 struct pci_controller
*hose
;
1174 struct platform_device
*platformdev
; /**< Platform device struture */
1175 struct usb_device
*usbdev
;
1177 struct drm_sg_mem
*sg
; /**< Scatter gather memory */
1178 unsigned int num_crtcs
; /**< Number of CRTCs on this device */
1179 void *dev_private
; /**< device private data */
1181 struct address_space
*dev_mapping
;
1182 struct drm_sigdata sigdata
; /**< For block_all_signals */
1185 struct drm_driver
*driver
;
1186 struct drm_local_map
*agp_buffer_map
;
1187 unsigned int agp_buffer_token
;
1188 struct drm_minor
*control
; /**< Control node for card */
1189 struct drm_minor
*primary
; /**< render type primary screen head */
1191 struct drm_mode_config mode_config
; /**< Current mode config */
1193 /** \name GEM information */
1195 spinlock_t object_name_lock
;
1196 struct idr object_name_idr
;
1198 int switch_power_state
;
1200 atomic_t unplugged
; /* device has been unplugged or gone away */
1203 #define DRM_SWITCH_POWER_ON 0
1204 #define DRM_SWITCH_POWER_OFF 1
1205 #define DRM_SWITCH_POWER_CHANGING 2
1207 static __inline__
int drm_core_check_feature(struct drm_device
*dev
,
1210 return ((dev
->driver
->driver_features
& feature
) ? 1 : 0);
1213 static inline int drm_dev_to_irq(struct drm_device
*dev
)
1215 return dev
->driver
->bus
->get_irq(dev
);
1220 static inline int drm_core_has_AGP(struct drm_device
*dev
)
1222 return drm_core_check_feature(dev
, DRIVER_USE_AGP
);
1225 #define drm_core_has_AGP(dev) (0)
1229 static inline int drm_core_has_MTRR(struct drm_device
*dev
)
1231 return drm_core_check_feature(dev
, DRIVER_USE_MTRR
);
1234 #define DRM_MTRR_WC MTRR_TYPE_WRCOMB
1236 static inline int drm_mtrr_add(unsigned long offset
, unsigned long size
,
1239 return mtrr_add(offset
, size
, flags
, 1);
1242 static inline int drm_mtrr_del(int handle
, unsigned long offset
,
1243 unsigned long size
, unsigned int flags
)
1245 return mtrr_del(handle
, offset
, size
);
1249 #define drm_core_has_MTRR(dev) (0)
1251 #define DRM_MTRR_WC 0
1253 static inline int drm_mtrr_add(unsigned long offset
, unsigned long size
,
1259 static inline int drm_mtrr_del(int handle
, unsigned long offset
,
1260 unsigned long size
, unsigned int flags
)
1266 static inline void drm_device_set_unplugged(struct drm_device
*dev
)
1269 atomic_set(&dev
->unplugged
, 1);
1272 static inline int drm_device_is_unplugged(struct drm_device
*dev
)
1274 int ret
= atomic_read(&dev
->unplugged
);
1279 /******************************************************************/
1280 /** \name Internal function definitions */
1283 /* Driver support (drm_drv.h) */
1284 extern long drm_ioctl(struct file
*filp
,
1285 unsigned int cmd
, unsigned long arg
);
1286 extern long drm_compat_ioctl(struct file
*filp
,
1287 unsigned int cmd
, unsigned long arg
);
1288 extern int drm_lastclose(struct drm_device
*dev
);
1290 /* Device support (drm_fops.h) */
1291 extern struct mutex drm_global_mutex
;
1292 extern int drm_open(struct inode
*inode
, struct file
*filp
);
1293 extern int drm_stub_open(struct inode
*inode
, struct file
*filp
);
1294 extern int drm_fasync(int fd
, struct file
*filp
, int on
);
1295 extern ssize_t
drm_read(struct file
*filp
, char __user
*buffer
,
1296 size_t count
, loff_t
*offset
);
1297 extern int drm_release(struct inode
*inode
, struct file
*filp
);
1299 /* Mapping support (drm_vm.h) */
1300 extern int drm_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1301 extern int drm_mmap_locked(struct file
*filp
, struct vm_area_struct
*vma
);
1302 extern void drm_vm_open_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1303 extern void drm_vm_close_locked(struct drm_device
*dev
, struct vm_area_struct
*vma
);
1304 extern unsigned int drm_poll(struct file
*filp
, struct poll_table_struct
*wait
);
1306 /* Memory management support (drm_memory.h) */
1307 #include <drm/drm_memory.h>
1308 extern void drm_free_agp(DRM_AGP_MEM
* handle
, int pages
);
1309 extern int drm_bind_agp(DRM_AGP_MEM
* handle
, unsigned int start
);
1310 extern DRM_AGP_MEM
*drm_agp_bind_pages(struct drm_device
*dev
,
1311 struct page
**pages
,
1312 unsigned long num_pages
,
1313 uint32_t gtt_offset
,
1315 extern int drm_unbind_agp(DRM_AGP_MEM
* handle
);
1317 /* Misc. IOCTL support (drm_ioctl.h) */
1318 extern int drm_irq_by_busid(struct drm_device
*dev
, void *data
,
1319 struct drm_file
*file_priv
);
1320 extern int drm_getunique(struct drm_device
*dev
, void *data
,
1321 struct drm_file
*file_priv
);
1322 extern int drm_setunique(struct drm_device
*dev
, void *data
,
1323 struct drm_file
*file_priv
);
1324 extern int drm_getmap(struct drm_device
*dev
, void *data
,
1325 struct drm_file
*file_priv
);
1326 extern int drm_getclient(struct drm_device
*dev
, void *data
,
1327 struct drm_file
*file_priv
);
1328 extern int drm_getstats(struct drm_device
*dev
, void *data
,
1329 struct drm_file
*file_priv
);
1330 extern int drm_getcap(struct drm_device
*dev
, void *data
,
1331 struct drm_file
*file_priv
);
1332 extern int drm_setversion(struct drm_device
*dev
, void *data
,
1333 struct drm_file
*file_priv
);
1334 extern int drm_noop(struct drm_device
*dev
, void *data
,
1335 struct drm_file
*file_priv
);
1337 /* Context IOCTL support (drm_context.h) */
1338 extern int drm_resctx(struct drm_device
*dev
, void *data
,
1339 struct drm_file
*file_priv
);
1340 extern int drm_addctx(struct drm_device
*dev
, void *data
,
1341 struct drm_file
*file_priv
);
1342 extern int drm_modctx(struct drm_device
*dev
, void *data
,
1343 struct drm_file
*file_priv
);
1344 extern int drm_getctx(struct drm_device
*dev
, void *data
,
1345 struct drm_file
*file_priv
);
1346 extern int drm_switchctx(struct drm_device
*dev
, void *data
,
1347 struct drm_file
*file_priv
);
1348 extern int drm_newctx(struct drm_device
*dev
, void *data
,
1349 struct drm_file
*file_priv
);
1350 extern int drm_rmctx(struct drm_device
*dev
, void *data
,
1351 struct drm_file
*file_priv
);
1353 extern int drm_ctxbitmap_init(struct drm_device
*dev
);
1354 extern void drm_ctxbitmap_cleanup(struct drm_device
*dev
);
1355 extern void drm_ctxbitmap_free(struct drm_device
*dev
, int ctx_handle
);
1357 extern int drm_setsareactx(struct drm_device
*dev
, void *data
,
1358 struct drm_file
*file_priv
);
1359 extern int drm_getsareactx(struct drm_device
*dev
, void *data
,
1360 struct drm_file
*file_priv
);
1362 /* Authentication IOCTL support (drm_auth.h) */
1363 extern int drm_getmagic(struct drm_device
*dev
, void *data
,
1364 struct drm_file
*file_priv
);
1365 extern int drm_authmagic(struct drm_device
*dev
, void *data
,
1366 struct drm_file
*file_priv
);
1367 extern int drm_remove_magic(struct drm_master
*master
, drm_magic_t magic
);
1369 /* Cache management (drm_cache.c) */
1370 void drm_clflush_pages(struct page
*pages
[], unsigned long num_pages
);
1371 void drm_clflush_virt_range(char *addr
, unsigned long length
);
1373 /* Locking IOCTL support (drm_lock.h) */
1374 extern int drm_lock(struct drm_device
*dev
, void *data
,
1375 struct drm_file
*file_priv
);
1376 extern int drm_unlock(struct drm_device
*dev
, void *data
,
1377 struct drm_file
*file_priv
);
1378 extern int drm_lock_free(struct drm_lock_data
*lock_data
, unsigned int context
);
1379 extern void drm_idlelock_take(struct drm_lock_data
*lock_data
);
1380 extern void drm_idlelock_release(struct drm_lock_data
*lock_data
);
1383 * These are exported to drivers so that they can implement fencing using
1384 * DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
1387 extern int drm_i_have_hw_lock(struct drm_device
*dev
, struct drm_file
*file_priv
);
1389 /* Buffer management support (drm_bufs.h) */
1390 extern int drm_addbufs_agp(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1391 extern int drm_addbufs_pci(struct drm_device
*dev
, struct drm_buf_desc
* request
);
1392 extern int drm_addmap(struct drm_device
*dev
, resource_size_t offset
,
1393 unsigned int size
, enum drm_map_type type
,
1394 enum drm_map_flags flags
, struct drm_local_map
**map_ptr
);
1395 extern int drm_addmap_ioctl(struct drm_device
*dev
, void *data
,
1396 struct drm_file
*file_priv
);
1397 extern int drm_rmmap(struct drm_device
*dev
, struct drm_local_map
*map
);
1398 extern int drm_rmmap_locked(struct drm_device
*dev
, struct drm_local_map
*map
);
1399 extern int drm_rmmap_ioctl(struct drm_device
*dev
, void *data
,
1400 struct drm_file
*file_priv
);
1401 extern int drm_addbufs(struct drm_device
*dev
, void *data
,
1402 struct drm_file
*file_priv
);
1403 extern int drm_infobufs(struct drm_device
*dev
, void *data
,
1404 struct drm_file
*file_priv
);
1405 extern int drm_markbufs(struct drm_device
*dev
, void *data
,
1406 struct drm_file
*file_priv
);
1407 extern int drm_freebufs(struct drm_device
*dev
, void *data
,
1408 struct drm_file
*file_priv
);
1409 extern int drm_mapbufs(struct drm_device
*dev
, void *data
,
1410 struct drm_file
*file_priv
);
1411 extern int drm_order(unsigned long size
);
1413 /* DMA support (drm_dma.h) */
1414 extern int drm_dma_setup(struct drm_device
*dev
);
1415 extern void drm_dma_takedown(struct drm_device
*dev
);
1416 extern void drm_free_buffer(struct drm_device
*dev
, struct drm_buf
* buf
);
1417 extern void drm_core_reclaim_buffers(struct drm_device
*dev
,
1418 struct drm_file
*filp
);
1420 /* IRQ support (drm_irq.h) */
1421 extern int drm_control(struct drm_device
*dev
, void *data
,
1422 struct drm_file
*file_priv
);
1423 extern int drm_irq_install(struct drm_device
*dev
);
1424 extern int drm_irq_uninstall(struct drm_device
*dev
);
1426 extern int drm_vblank_init(struct drm_device
*dev
, int num_crtcs
);
1427 extern int drm_wait_vblank(struct drm_device
*dev
, void *data
,
1428 struct drm_file
*filp
);
1429 extern int drm_vblank_wait(struct drm_device
*dev
, unsigned int *vbl_seq
);
1430 extern u32
drm_vblank_count(struct drm_device
*dev
, int crtc
);
1431 extern u32
drm_vblank_count_and_time(struct drm_device
*dev
, int crtc
,
1432 struct timeval
*vblanktime
);
1433 extern bool drm_handle_vblank(struct drm_device
*dev
, int crtc
);
1434 extern int drm_vblank_get(struct drm_device
*dev
, int crtc
);
1435 extern void drm_vblank_put(struct drm_device
*dev
, int crtc
);
1436 extern void drm_vblank_off(struct drm_device
*dev
, int crtc
);
1437 extern void drm_vblank_cleanup(struct drm_device
*dev
);
1438 extern u32
drm_get_last_vbltimestamp(struct drm_device
*dev
, int crtc
,
1439 struct timeval
*tvblank
, unsigned flags
);
1440 extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device
*dev
,
1441 int crtc
, int *max_error
,
1442 struct timeval
*vblank_time
,
1444 struct drm_crtc
*refcrtc
);
1445 extern void drm_calc_timestamping_constants(struct drm_crtc
*crtc
);
1448 drm_mode_parse_command_line_for_connector(const char *mode_option
,
1449 struct drm_connector
*connector
,
1450 struct drm_cmdline_mode
*mode
);
1452 extern struct drm_display_mode
*
1453 drm_mode_create_from_cmdline_mode(struct drm_device
*dev
,
1454 struct drm_cmdline_mode
*cmd
);
1456 /* Modesetting support */
1457 extern void drm_vblank_pre_modeset(struct drm_device
*dev
, int crtc
);
1458 extern void drm_vblank_post_modeset(struct drm_device
*dev
, int crtc
);
1459 extern int drm_modeset_ctl(struct drm_device
*dev
, void *data
,
1460 struct drm_file
*file_priv
);
1462 /* AGP/GART support (drm_agpsupport.h) */
1463 extern struct drm_agp_head
*drm_agp_init(struct drm_device
*dev
);
1464 extern int drm_agp_acquire(struct drm_device
*dev
);
1465 extern int drm_agp_acquire_ioctl(struct drm_device
*dev
, void *data
,
1466 struct drm_file
*file_priv
);
1467 extern int drm_agp_release(struct drm_device
*dev
);
1468 extern int drm_agp_release_ioctl(struct drm_device
*dev
, void *data
,
1469 struct drm_file
*file_priv
);
1470 extern int drm_agp_enable(struct drm_device
*dev
, struct drm_agp_mode mode
);
1471 extern int drm_agp_enable_ioctl(struct drm_device
*dev
, void *data
,
1472 struct drm_file
*file_priv
);
1473 extern int drm_agp_info(struct drm_device
*dev
, struct drm_agp_info
*info
);
1474 extern int drm_agp_info_ioctl(struct drm_device
*dev
, void *data
,
1475 struct drm_file
*file_priv
);
1476 extern int drm_agp_alloc(struct drm_device
*dev
, struct drm_agp_buffer
*request
);
1477 extern int drm_agp_alloc_ioctl(struct drm_device
*dev
, void *data
,
1478 struct drm_file
*file_priv
);
1479 extern int drm_agp_free(struct drm_device
*dev
, struct drm_agp_buffer
*request
);
1480 extern int drm_agp_free_ioctl(struct drm_device
*dev
, void *data
,
1481 struct drm_file
*file_priv
);
1482 extern int drm_agp_unbind(struct drm_device
*dev
, struct drm_agp_binding
*request
);
1483 extern int drm_agp_unbind_ioctl(struct drm_device
*dev
, void *data
,
1484 struct drm_file
*file_priv
);
1485 extern int drm_agp_bind(struct drm_device
*dev
, struct drm_agp_binding
*request
);
1486 extern int drm_agp_bind_ioctl(struct drm_device
*dev
, void *data
,
1487 struct drm_file
*file_priv
);
1489 /* Stub support (drm_stub.h) */
1490 extern int drm_setmaster_ioctl(struct drm_device
*dev
, void *data
,
1491 struct drm_file
*file_priv
);
1492 extern int drm_dropmaster_ioctl(struct drm_device
*dev
, void *data
,
1493 struct drm_file
*file_priv
);
1494 struct drm_master
*drm_master_create(struct drm_minor
*minor
);
1495 extern struct drm_master
*drm_master_get(struct drm_master
*master
);
1496 extern void drm_master_put(struct drm_master
**master
);
1498 extern void drm_put_dev(struct drm_device
*dev
);
1499 extern int drm_put_minor(struct drm_minor
**minor
);
1500 extern void drm_unplug_dev(struct drm_device
*dev
);
1501 extern unsigned int drm_debug
;
1503 extern unsigned int drm_vblank_offdelay
;
1504 extern unsigned int drm_timestamp_precision
;
1506 extern struct class *drm_class
;
1507 extern struct proc_dir_entry
*drm_proc_root
;
1508 extern struct dentry
*drm_debugfs_root
;
1510 extern struct idr drm_minors_idr
;
1512 extern struct drm_local_map
*drm_getsarea(struct drm_device
*dev
);
1514 /* Proc support (drm_proc.h) */
1515 extern int drm_proc_init(struct drm_minor
*minor
, int minor_id
,
1516 struct proc_dir_entry
*root
);
1517 extern int drm_proc_cleanup(struct drm_minor
*minor
, struct proc_dir_entry
*root
);
1519 /* Debugfs support */
1520 #if defined(CONFIG_DEBUG_FS)
1521 extern int drm_debugfs_init(struct drm_minor
*minor
, int minor_id
,
1522 struct dentry
*root
);
1523 extern int drm_debugfs_create_files(struct drm_info_list
*files
, int count
,
1524 struct dentry
*root
, struct drm_minor
*minor
);
1525 extern int drm_debugfs_remove_files(struct drm_info_list
*files
, int count
,
1526 struct drm_minor
*minor
);
1527 extern int drm_debugfs_cleanup(struct drm_minor
*minor
);
1530 /* Info file support */
1531 extern int drm_name_info(struct seq_file
*m
, void *data
);
1532 extern int drm_vm_info(struct seq_file
*m
, void *data
);
1533 extern int drm_bufs_info(struct seq_file
*m
, void *data
);
1534 extern int drm_vblank_info(struct seq_file
*m
, void *data
);
1535 extern int drm_clients_info(struct seq_file
*m
, void* data
);
1536 extern int drm_gem_name_info(struct seq_file
*m
, void *data
);
1539 extern int drm_gem_prime_handle_to_fd(struct drm_device
*dev
,
1540 struct drm_file
*file_priv
, uint32_t handle
, uint32_t flags
,
1542 extern int drm_gem_prime_fd_to_handle(struct drm_device
*dev
,
1543 struct drm_file
*file_priv
, int prime_fd
, uint32_t *handle
);
1545 extern int drm_prime_handle_to_fd_ioctl(struct drm_device
*dev
, void *data
,
1546 struct drm_file
*file_priv
);
1547 extern int drm_prime_fd_to_handle_ioctl(struct drm_device
*dev
, void *data
,
1548 struct drm_file
*file_priv
);
1550 extern int drm_prime_sg_to_page_addr_arrays(struct sg_table
*sgt
, struct page
**pages
,
1551 dma_addr_t
*addrs
, int max_pages
);
1552 extern struct sg_table
*drm_prime_pages_to_sg(struct page
**pages
, int nr_pages
);
1553 extern void drm_prime_gem_destroy(struct drm_gem_object
*obj
, struct sg_table
*sg
);
1556 void drm_prime_init_file_private(struct drm_prime_file_private
*prime_fpriv
);
1557 void drm_prime_destroy_file_private(struct drm_prime_file_private
*prime_fpriv
);
1558 int drm_prime_add_imported_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t handle
);
1559 int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
, uint32_t *handle
);
1560 void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private
*prime_fpriv
, struct dma_buf
*dma_buf
);
1562 int drm_prime_add_dma_buf(struct drm_device
*dev
, struct drm_gem_object
*obj
);
1563 int drm_prime_lookup_obj(struct drm_device
*dev
, struct dma_buf
*buf
,
1564 struct drm_gem_object
**obj
);
1567 extern int drm_vma_info(struct seq_file
*m
, void *data
);
1570 /* Scatter Gather Support (drm_scatter.h) */
1571 extern void drm_sg_cleanup(struct drm_sg_mem
* entry
);
1572 extern int drm_sg_alloc_ioctl(struct drm_device
*dev
, void *data
,
1573 struct drm_file
*file_priv
);
1574 extern int drm_sg_alloc(struct drm_device
*dev
, struct drm_scatter_gather
* request
);
1575 extern int drm_sg_free(struct drm_device
*dev
, void *data
,
1576 struct drm_file
*file_priv
);
1578 /* ATI PCIGART support (ati_pcigart.h) */
1579 extern int drm_ati_pcigart_init(struct drm_device
*dev
,
1580 struct drm_ati_pcigart_info
* gart_info
);
1581 extern int drm_ati_pcigart_cleanup(struct drm_device
*dev
,
1582 struct drm_ati_pcigart_info
* gart_info
);
1584 extern drm_dma_handle_t
*drm_pci_alloc(struct drm_device
*dev
, size_t size
,
1586 extern void __drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1587 extern void drm_pci_free(struct drm_device
*dev
, drm_dma_handle_t
* dmah
);
1589 /* sysfs support (drm_sysfs.c) */
1590 struct drm_sysfs_class
;
1591 extern struct class *drm_sysfs_create(struct module
*owner
, char *name
);
1592 extern void drm_sysfs_destroy(void);
1593 extern int drm_sysfs_device_add(struct drm_minor
*minor
);
1594 extern void drm_sysfs_hotplug_event(struct drm_device
*dev
);
1595 extern void drm_sysfs_device_remove(struct drm_minor
*minor
);
1596 extern char *drm_get_connector_status_name(enum drm_connector_status status
);
1597 extern int drm_sysfs_connector_add(struct drm_connector
*connector
);
1598 extern void drm_sysfs_connector_remove(struct drm_connector
*connector
);
1600 /* Graphics Execution Manager library functions (drm_gem.c) */
1601 int drm_gem_init(struct drm_device
*dev
);
1602 void drm_gem_destroy(struct drm_device
*dev
);
1603 void drm_gem_object_release(struct drm_gem_object
*obj
);
1604 void drm_gem_object_free(struct kref
*kref
);
1605 struct drm_gem_object
*drm_gem_object_alloc(struct drm_device
*dev
,
1607 int drm_gem_object_init(struct drm_device
*dev
,
1608 struct drm_gem_object
*obj
, size_t size
);
1609 int drm_gem_private_object_init(struct drm_device
*dev
,
1610 struct drm_gem_object
*obj
, size_t size
);
1611 void drm_gem_object_handle_free(struct drm_gem_object
*obj
);
1612 void drm_gem_vm_open(struct vm_area_struct
*vma
);
1613 void drm_gem_vm_close(struct vm_area_struct
*vma
);
1614 int drm_gem_mmap(struct file
*filp
, struct vm_area_struct
*vma
);
1616 #include <drm/drm_global.h>
1619 drm_gem_object_reference(struct drm_gem_object
*obj
)
1621 kref_get(&obj
->refcount
);
1625 drm_gem_object_unreference(struct drm_gem_object
*obj
)
1628 kref_put(&obj
->refcount
, drm_gem_object_free
);
1632 drm_gem_object_unreference_unlocked(struct drm_gem_object
*obj
)
1635 struct drm_device
*dev
= obj
->dev
;
1636 mutex_lock(&dev
->struct_mutex
);
1637 kref_put(&obj
->refcount
, drm_gem_object_free
);
1638 mutex_unlock(&dev
->struct_mutex
);
1642 int drm_gem_handle_create(struct drm_file
*file_priv
,
1643 struct drm_gem_object
*obj
,
1645 int drm_gem_handle_delete(struct drm_file
*filp
, u32 handle
);
1648 drm_gem_object_handle_reference(struct drm_gem_object
*obj
)
1650 drm_gem_object_reference(obj
);
1651 atomic_inc(&obj
->handle_count
);
1655 drm_gem_object_handle_unreference(struct drm_gem_object
*obj
)
1660 if (atomic_read(&obj
->handle_count
) == 0)
1663 * Must bump handle count first as this may be the last
1664 * ref, in which case the object would disappear before we
1665 * checked for a name
1667 if (atomic_dec_and_test(&obj
->handle_count
))
1668 drm_gem_object_handle_free(obj
);
1669 drm_gem_object_unreference(obj
);
1673 drm_gem_object_handle_unreference_unlocked(struct drm_gem_object
*obj
)
1678 if (atomic_read(&obj
->handle_count
) == 0)
1682 * Must bump handle count first as this may be the last
1683 * ref, in which case the object would disappear before we
1684 * checked for a name
1687 if (atomic_dec_and_test(&obj
->handle_count
))
1688 drm_gem_object_handle_free(obj
);
1689 drm_gem_object_unreference_unlocked(obj
);
1692 void drm_gem_free_mmap_offset(struct drm_gem_object
*obj
);
1693 int drm_gem_create_mmap_offset(struct drm_gem_object
*obj
);
1695 struct drm_gem_object
*drm_gem_object_lookup(struct drm_device
*dev
,
1696 struct drm_file
*filp
,
1698 int drm_gem_close_ioctl(struct drm_device
*dev
, void *data
,
1699 struct drm_file
*file_priv
);
1700 int drm_gem_flink_ioctl(struct drm_device
*dev
, void *data
,
1701 struct drm_file
*file_priv
);
1702 int drm_gem_open_ioctl(struct drm_device
*dev
, void *data
,
1703 struct drm_file
*file_priv
);
1704 void drm_gem_open(struct drm_device
*dev
, struct drm_file
*file_private
);
1705 void drm_gem_release(struct drm_device
*dev
, struct drm_file
*file_private
);
1707 extern void drm_core_ioremap(struct drm_local_map
*map
, struct drm_device
*dev
);
1708 extern void drm_core_ioremap_wc(struct drm_local_map
*map
, struct drm_device
*dev
);
1709 extern void drm_core_ioremapfree(struct drm_local_map
*map
, struct drm_device
*dev
);
1711 static __inline__
struct drm_local_map
*drm_core_findmap(struct drm_device
*dev
,
1714 struct drm_map_list
*_entry
;
1715 list_for_each_entry(_entry
, &dev
->maplist
, head
)
1716 if (_entry
->user_token
== token
)
1721 static __inline__
void drm_core_dropmap(struct drm_local_map
*map
)
1725 #include <drm/drm_mem_util.h>
1727 extern int drm_fill_in_dev(struct drm_device
*dev
,
1728 const struct pci_device_id
*ent
,
1729 struct drm_driver
*driver
);
1730 int drm_get_minor(struct drm_device
*dev
, struct drm_minor
**minor
, int type
);
1734 static __inline__
int drm_pci_device_is_agp(struct drm_device
*dev
)
1736 if (dev
->driver
->device_is_agp
!= NULL
) {
1737 int err
= (*dev
->driver
->device_is_agp
) (dev
);
1744 return pci_find_capability(dev
->pdev
, PCI_CAP_ID_AGP
);
1747 extern int drm_pci_init(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1748 extern void drm_pci_exit(struct drm_driver
*driver
, struct pci_driver
*pdriver
);
1749 extern int drm_get_pci_dev(struct pci_dev
*pdev
,
1750 const struct pci_device_id
*ent
,
1751 struct drm_driver
*driver
);
1753 #define DRM_PCIE_SPEED_25 1
1754 #define DRM_PCIE_SPEED_50 2
1755 #define DRM_PCIE_SPEED_80 4
1757 extern int drm_pcie_get_speed_cap_mask(struct drm_device
*dev
, u32
*speed_mask
);
1759 /* platform section */
1760 extern int drm_platform_init(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1761 extern void drm_platform_exit(struct drm_driver
*driver
, struct platform_device
*platform_device
);
1763 extern int drm_get_platform_dev(struct platform_device
*pdev
,
1764 struct drm_driver
*driver
);
1766 /* returns true if currently okay to sleep */
1767 static __inline__
bool drm_can_sleep(void)
1769 if (in_atomic() || in_dbg_master() || irqs_disabled())
1774 #endif /* __KERNEL__ */